adapt your /index.php otherwise scores won't be recorded!

Well I recently upgraded from Vb Classic to VB Suit and now I'm getting this notice

Notice:
Your forum's mainpage is forumforum.php - please make sure to adapt your /index.php otherwise scores won't be recorded!You will find detailed instructions in the ibProArcade-archive: INFO - vbadvanced or other Portal.txt or in this popup-window